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Proceedings Paper

Visible Praseodymium doped fluorozirconate chip laser (Conference Presentation)
Author(s): Champak Khurmi; George Y. Chen; Tanya M. Monro; David G. Lancaster

Paper Abstract

High beam quality visible laser emission can be directly generated using optically pumped rare-earth (RE) ion doped praseodymium (Pr3+) in a suitable low phonon energy host. Trivalent Pr3+ can generate laser emission in the red, orange, green and blue spectral domains [1]. Direct generation in a RE ion has the advantage of energy storage and broad gain-bandwidths thus allowing tunable, Q-switched, and mode-locked laser operation [2]. Previously we have reported waveguide-based ZBLAN chip lasers in the near IR to mid-IR spectral domain. These chip lasers are based on the ultra-fast laser inscription (ULI) of depressed cladding waveguides into bulk RE ion doped ZBLAN chips. We report here visible continuous wave laser emission at 636 nm from a praseodymium doped fluorozirconate glass guided-wave chip laser. This ultra-fast laser inscribed gain chip is demonstrated to be a compact and integrated laser module. The laser module, pumped by two polarisation-coupled 442 nm single-mode GaN laser diodes, generates >8 mW lasing output with a beam quality of M2xy~ 1.15 and 1.1 (±0.1). To the best of our knowledge, this is the first visible laser emission from a glass-based waveguide chip laser. Improved laser performance may also realize laser operation of the lower gain 527 nm green transition, thus allowing the chip laser to simultaneously emit blue (un-depleted pump), green and red laser emission from the same waveguide. 1. T. Sandrock, et al.," Applied Physics B 58, 149-151 (1994). 2. M. Gaponenko, et al., Opt Lett 39, 6939-6941 (2014).

Paper Details

Date Published: 14 March 2018
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Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 1051111 (14 March 2018); doi: 10.1117/12.2288953
Show Author Affiliations
Champak Khurmi, Univ. of South Australia (Australia)
George Y. Chen, Univ. of South Australia (Australia)
Tanya M. Monro, Univ. of South Australia (Australia)
David G. Lancaster, Univ. of South Australia (Australia)


Published in SPIE Proceedings Vol. 10511:
Solid State Lasers XXVII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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